C Program to check if number is even or odd

If a number is exactly divisible by 2 then its an even number else it is an odd number. In this article we have shared two ways(Two C programs) to check whether the input number is even or odd. 1) Using Modulus operator(%) 2) Using Bitwise operator.

Program 1: Using Modulus operator

/* Program to check whether the input integer number
* is even or odd using the modulus operator (%)
*/
#include<stdio.h>
int main()
{
// This variable is to store the input number
int num;
printf("Enter an integer: ");
scanf("%d",&num);
// Modulus (%) returns remainder
if ( num%2 == 0 )
printf("%d is an even number", num);
else
printf("%d is an odd number", num);
return 0;
}

Output:

Program 2: Using Bitwise operator

/* Program to check if number is even or odd
* using bitwise operator
*/
#include<stdio.h>
int main()
{
int n;
printf("Enter an integer: ");
scanf("%d",&n);
if ( n & 1)
printf("%d is an odd number", n);
else
printf("%d is an even number", n);
return 0;
}